If separating effect is not good, which measure should be taken （）

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）

To proceed to the assistance of a ship in distress is（）

The treatment of the fuel oils involves storage, heating, filtering and（）

Using a file without a handle may result in （）

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

The condensers located in various stages of a flash evaporator are cooled by（）